Factubing co



W. H. BOSWORTH Feb. 3, 1931.

J WAGON LOADER Filed Oct. 24, 1929 2 Sheets-Sheet 1 INVENTO R ATTORNEYo Feb. 3, 1931. w. H. BOSWCRTH 1,790,739

WAGON LOADER Filed Oct. 24, 1929 2 Sheets-Sheet 2 shaft of the material-propelling means.

. Patented Feb. 3, 1 93 1 WILLIAM H. noswon'rrr, for YONKERS, NEW on/1;, lassirenon cr o enonen AISs MAN-fie V V v rAc'rURr wG-co. ma ors-law. Yonx, n; in, ACORROBAl-IONOENEWYORK WAGON thence Application filed October 24,4329. s izure. '402j1'7. r

V This invention relates to wagon loaders and excavators, and is directed particularly to the digging and feeding mechanism of such machines. c

The primary object of this invention is to provide a novel digging and feeding mechanism by which the operation of such a machine as that to which the present invention relates may be satisfactorily carried out under adverse conditions, as when, for example, the material to be handled is of such a nature as to require loosening or breaking up thereof before it can be effectively acted upon by the material-propelling means.

To the above end the present invention con;

templates the use of a plurality of dig ing elements or picks for loosening or brea ing up firmly packed and-frozen material, such as soil, earth, sand, gravel and the like, in combination with rotatable material-propeli30 like ribbons and carried by a plurality of rotatably disposed arms which also serve to support the ribbons with respect to the driving Other objects and advantages of the in vention will become apparent from the following description, taken in connectionwith the accompanying drawingsin which- Figure 1 is a side-elevation of the pick-up end of a wagon loader and excavator embodying this invention; Figure 2 is an end view of the machine as viewed from the right in Figure 1; Figure 3 is an enlarged detail sectional view taken on line 3-3 of Figure 2,

and showing the relation of the digging ele ments or picks to their associated screw-like ribbon; Figure 4 is a perspective view of one of the arms for sup orting the screw-like ribbon at the left in igure 2; and Figure 5 is a sectional view taken on Line 55 of Figure 3.

Leaders of the type abei'r e neritioned in v elude mine 9 edginstezhly 'm'ou ntedaipdnia ti a'ction d b which the machineimay be propelled LOHI pl aceto p-la'ce and crowded at slow "peed toward andiinte ther materia l t'e' he' excevatecl, there being e power innit such as :an internal ombustion engine :(net shown) employedr'es a driving m a s, :fer the i traction ee as well as for ehe-abhekeeeee ve yor 11- i This con eyer includes a plurality of buckets itflpcacried by a pairiof chains 13, r

passing, over" sprockets, pfwhi'eh the *lo'vver sprockets 114 gen-"1y :arershown, these'sprockets c being 'seci ire'd to the i nterme'diatesfposition:of

a shaft 15, which is *j ou'rnalled at :16 in vthe tower end oi'the firame 9 'amd' exteindsrtranstere'el yof themeehine; lltwi'll-be understood "that the u mt an'd the con veyorclrains 13;which shaft 1 5, is suchth'at this shaft is aerated int-he =cl'ire'ct-ion of the :mem A in Secured to the: p {ions :ebthe sheet i=5, rv-hi h :frem each side or the journafl and laterally eiispussec1warms 1 9 arms are provided: at. their outer ends with -heve'l fe'ees' 120,- the :fe ceseefthe arms at one ting connection between sthe 6, are a plurality of 'iradiel'l'y pr'ojectside of the shaft being. oppositely disposed'to V tfheteeesiifthe armsat the opposite side of the shit so as 'te acccmmcdate ap'ain'of rcp- 'pesitely pitched or inclined s'erewvdi ke hens 22, Ethepiteh of th ribbons: being such.

thattheir respective surfaces constitute their w es as the shaft 15 is rotated h'e rh re tien :e1thee rr w h ir; Figure 11. Prefer-ably jthe se iscrewehke rihhens are eeeured he the ein de er the :arihe w by :a plurality of bolts 23, as shown most clearly-in Figure@, and the bolts of each arm serve also to secure therete a piek ordti ging element :24; Each 4 e f-these aigg ing elements ftapered' to 2a relatively sharp entering eclzge et-iits f orward'iend, taper being such that its inner :end router faces 25 and 26 are at an angle of preferably theentering edge of eaehtpick pro-jectss'light- 1. i

"by, asgfer example, 1 beyendtheperiph- --er;r1= mergiinof thel screw lifke rfibbo'nflZ and lies within the circumferencerof the screw- 'face'of each digging element is slightly'in clined from the entering point of the'piCkto wards the center of rotation of the materiah a N w feeding mechanism, the outer faces of'these teeth are not required to. slide overthe, tightly packed material atthe rear of the entering ments secured to the outer ends of said arms and adapted to impart forwardly and upwardlydirected impacts to the material, and

rotatable screw-like members disposed intermediate said digging elements and their respective arms, said screwelike members being oppositely pitched for moving the material acted upon by the digging elements toward and'into the path of the conveyor buckets.

Intestimony whereof, Ighaveaflixed my signature to this specification.

WILLIAM H. BOSWORTH.

edges of ftheteeth as they pass through the material,with the result that a further saving in power: is effected? As a result ofthe. incli-. nation .ofthe inner faces25 of the digging elements,thematerial being acted upon by them I I isv permitted topass easily up over such faces a, V asthe teeth pass through the material and im partto it a combined skimming and plowing action which, together with the upwardl and I J.

forwardly directed impacts delivered-by the series'iof-teethtothematerialto be loaded, ef-

fectively'breakupsuch materialso that the screw-likeribbons may easily move the materialjacted-up'On towards and into the path ofthe buckets12 of the conveyor. 7.

Regardlessofwhether the machine is employed in; the handling of loose. or compact material,the path of 'travel'of the conveyor buckets-is cleared by the buckets themselves,

which, due to the provision of digging teeth 27 on the forward edges thereof, can be forced forwardly and through the material with comparative ease. The path which is cleared by the buckets provides room to receive the material which ismoved inwardly from opposite sides of the conveyor by the material- 1 propelling means as the machine advances toward and into thematerial to be loaded or excavated. Y

o Although only one form of the invention is herein shown and particularly described, it y will be understood that certain modifications may be employed without departing from the spirit of the invention or the scope of the following claim, as, for example, moreorlless digging elements than are herein shownjmay be employed, and likewise the provision for more or less radially disposed arms 19 may be made,'as desired." V

What is claimed 1s:

machine t character described comprising a conveyor having bucketsadapted to receive material at the pick-up end of u the conveyor and elevate it to the discharge I s endpof thesame, a rotatable shaft located at the pick-up end of said conveyor and projecting outwardly beyondopposite sides thereof, J

aplurality'of laterally, spaced and radially i" 'dispo'sedarms carried by said shaft at opposite endsthereof, a plurality of diggingele- 

